When The Simpsons go to Itchy and Scratchy Land they find themselves (somewhat inevitably) targeted by murderous Itchy and Scratchy robots. We know they ultimatley defeated them with flash photography, but before that a deleted scene saw Lisa try a different tactic. Approaching the robots Lisa tries to confuse them with the following paradox: "Everything I say next is a lie. Now I am lying." The robots merely shrug this off, forcing Lisa to retreat and admit that they were smarter then she thought. Meanwhile Homer is working himself into a mental breakdown trying to figure out if Lisa is lying or telling the truth. More inanimate objects smarter than Homer!